#menuder {
	display: table;
	width: 100%;
	azimuth: center;
}
#menuizq {
	width: 170px;
}
#menuder li {	
	float: left;
	list-style-type: none;
	margin: 0 0 1em 0;
	padding: 0;
	white-space: nowrap;
}
#menuizq li {
	margin: 0; 
}

#menuder ul,
#menuizq ul {
	margin: 0;
	padding: 0;
	list-style-type: none;
	font-size: .9em;
}
#menuder a,
#menuizq a {
	padding: 3px 10px 3px 22px;
	border: 1px solid;
	border-color: #ddd #000 #000 #ddd;
	background-repeat: no-repeat;
	background-position: 0% 50%;
	text-decoration: none;
	background-color: #B0C4DE;
	background-image: url(./imagenes/l1_down.jpg);
}
#menuizq a {
	display: block;
}
#menuder a:link,
#menuder a:visited,
#menuizq a:link,
#menuizq a:visited {
	color: #F0FFFF;
	text-decoration: none;
}
#menuder a:hover,
#menuder a:active,
#menuizq a:hover,
#menuizq a:active{
	background-color: #9F6F9F;
	background-image:  url(./imagenes/l1_over.jpg);
	background-repeat: no-repeat;
	background-position: 0% 50%;
	background-image: url(./imagenes/l1_over.jpg);
	background-repeat: no-repeat;
	background-position: 0% 50%;
	color: #E6E6FA;
}